Improvement in locks



UNITED STATES PHIL() S. FEL'IER, OF CINGINNATUS, NEV YORK.

IMPROVEMENT IN LOCKS.

Specification forming part of Letters Patent No. 56,394, dated July 17,1866.

To all whom it may concern:

Be it known that I, PHILO S. FELTER, of Gineinnatus, in the county ofCortland and State of New York, have invented a new and usefulImprovement in Locks; and I do hereby declare the following to be afull, clear, and exact description thereof, reference heilig had to theaccompanying drawings, figures, and letters of reference. thereon,making part of this specification.

Of the said drawings, Figure 1 is a view of the lock as attached to adoor. Fig. 2 is a front elevation, havin g the front plate removed toshow the internal mechanism. Fig. 3 is a vertical section through linea' y. Fig. 4L is a view of the dial-plate and the device for opening thelock in the night time or without referring to the gures on the dial.

Similar letters of reference indicate like parts in all the drawings.

My invention is designed as an improvement upon a patent granted meDecember 17, 1861, and it consists, first, in a novel arrangement ofmechanism to make a lock burglar-proof by covering the key-hole andretaining the cover in place; second, in a device which may be readilyapplied to the lock to unlock the same without referring to the figuresor combination by which it is locked up.

To enable others skilled in the art to make and use my invention, I willdescribe the construction and operation thereof.

A is the case or shell of the lock. B is the bolt. C is the key-holeguard or cover. D is the tumbler for retaining the said guard in place.E is a disk-wheel, which has a pin shown at n, Fig. 3, which pin isdirectly under n, Fig. 2. .Fis a toothed wheel directlyover thedisk-wheel E, provided with a series of holes, as shown in Fig. 2. G isthe dial-plate attached to the door-frame on the outside of the lock. His an arbor, provided with an arm, h, having a projection on the end,which ts the holes in the spur-wheel F. I is an arbor or shaft foroperating the key-hole guard. K is the plate, which is detachable fromthe lock and carried with the owner, and by means of which the lock canbe operated without recourse to the figures or set by which the guard iscontrolled. l

The combination set by which the lock is operated is 22, 63. rIhe squareend of the key is inserted in the niortise of the arbor H, and the dialis rotated in the direction of the black arrow until the rst number ofthe set 22, will be in line with the point o, which operation will bringthe notch or recess b iii the wheel E in proper position for the curvedend of the4 tumbler to enter therein. The disk-wlieel E has a pin, u, inits face, and the spur-wheel F has a pin, on, upon the saine line ofcirciimference, and as the dial is rotated these pins are brought incontact and the disk E is rotated and held at any point by friction.rIhe dial Gr .is then rotated backward in the direction of the red arrowuntil the number 63 of the set coincides with the point o on thedial-plate, which will bring the notch or recess a in4 the wheel Fdirectly over the recess iii the wheel E and in line with the curved endof the tumbler D. rEhe key is inserted in the lock, the bolt thrown andheld by the tumblers c d, the guard thrown over the key-hole by theshaft I, and by turning the dial G partially around the notches a b arethrown out of line with the end of the tumbler D, and the lock issecured from picking.

The key-hole guard or cover, which is of hardened metal and fills thespace between the plates of the lock, is pivoted to the arbor I, and hasa groove cut across the hole where it is pivoted, which is fitted by apin through the arbor I. The end of the arbor I is mortised to receivethe tenen on the end of the key, and by turning the arbor forward theguard is thrown over the key-hole.

The lock of itself consists of a series of tumblers, o d, which areoperated in the ordinary way, and as they form no part of myinvention adetailed description is omitted. All the tuniblers aremoved in onedirection by springs, as shown in Fig. 2.

To unlock the lock the dial is rotated once around in the direction ofthe dark arrow to make sure of the contact of the pins m and a, andconsequently of the wheel E being rotated. The dial is then rotated inthe same direction until the rst number, 22, of the set is iii line withthe point o. The dial is then turned in the opposite directionredarrowuntil the second number, 63, coincides with the point o, whichoperation brings the notches in the wheels E F directly in line with theend of the tumbler D, which secures the guard.

The key-hole guard is thrown out of place, and the key may then beinserted. The arbor H projects through the back plate of the lock, andis grasped firmly by the jaws of a springplate, which is covered by acircular cap (shown in Fig. 3.)

To alter the set by which the lock is operated, the end of' the arbor isreleased from the spring-plate and thrown forward a small distance todisengage the arm h from the Wheel F, the arbor'turned to a newposition, and the spring-plate replaced.

To find the new set there isa small hole in the lock-plate directlyunder the arbor H, and also one in each of the wheels E and F, whichWill coincide with each other'when the recesses a and b are in line withthe end of the tumbler D. On removing the cap a small pin will be found,which insert in the hole in the lock-plate and turn the dial forward inthe direction of the dark arrow until the pin slips into the hole oftheiirst wheel, E. The number on the dial then in line with the point owill be the first number of the set. Turn the dial backward until thepin slips in the hole in the second wheel F. rI he number at the point owill be the second number of the set. Remove the pin and replace thecap.

rlhe set can be changed as many times as there are holes in the wheel F.

To operate the lock without recourse to the figures or set, thedetachable plate K has a series of holes and a dial, and is providedwith springs fand g, the ends of which are pointed and project throughthe holes in the plate K, as shown in Fig. 4. The dial Gr is set at thefirst figure ot' the set, and the rough'spring g of the plate K is setto allow its point to enter the mortise 'i of the dial G. The dial isthen turned until the second figure of the set is at the point o and thesmooth springf is set over the mortise i, so that its point may enterthe same. The plate may now be detached and carried with the personhaving charge of the lock. To open the lock with this plate the dial isrotated once (for reasons stated above) and the plate placed on the pin7c 7c. The tin ger is pressed on the rough spring g and the dial rotatedforward until the point of the spring slips into the mortise t' andstops the dial. Pressure is now removed from the spring g and applied tothe smooth springf, and the dial turned backward until the point of thespring slips into the mortise. The key-hole guard may now be turned downand the lock operated.

I claim- 1. The eombinationof the wheels E and F, tumbler I), andkey-hole guard or cover (l, arranged and operating togethersubstantially as described and specified.

2. The combination of the wheels E and F, tumbler D, key-hole cover C,with the arbor H 'and dial G, arranged and operating -substantially asdescribed and specified.

3. In combination with the subject-matter of the above, the detachableplate K, arranged as described, for operating the lock without recourseto the numbers ofthe set by which it is locked, substantially asdescribed and speeilied.

PH ILO S. FELTER.

l/Vitnesses:

ISRAEL GEE. CEAS. C. Gnu.

